On a September 20, 1963, visit to New York that includes an address to the United Nations General Assembly on the nuclear test-ban treaty, President John F. Kennedy takes time out to express his appreciation to Americans working at the United Nations.

President Lyndon B. Johnson holds a press conference on March 7, 1964, and takes questions on a range of topics, from the pending civil rights bill to the war in Vietnam. Afterward, in a recorded conversation with the president, Lady Bird Johnson evaluates her husband’s performance and awards him a “B+.”

After being held for 27 years as a political prisoner, the newly freed Nelson Mandela stands before the United Nations on June 22, 1990. As deputy president of the African National Congress, Mandela delivers a speech to the Special Committee Against Apartheid and calls for continued economic sanctions against South Africa to help force an end to segregation.

On May 3, 2008, Cyclone Nargis hit Myanmar, formerly known as Burma, causing major damage and a massive death toll. Speaking from the White House on May 5 in her first press conference, first lady Laura Bush criticizes the country’s military government for failure to warn its citizens of the impending storm.

In a broadcast delivered from the White House by direct wire to the United Nations charter conference in San Francisco on April 25, 1945, President Harry Truman describes the challenges facing the new organization.

After many unfruitful telephone conversations with Mississippi Gov. Ross Barnett, President John F. Kennedy calls the governor one more time to discuss the building tension over James Meredith’s impending registration at the University of Mississippi. Though the governor has made clear his opposition to the Supreme Court order to allow Meredith to attend the school, President Kennedy tries to assess whether the governor will maintain law and order when Meredith arrives.

In a nationally broadcast message to the American people on September 14, 1986, first lady Nancy Reagan joins President Ronald Reagan to kick off her "Just Say No" campaign, an effort to raise drug abuse awareness.